Air delivery device for ventilating apparatus



Sept. 18, 1951 G. R. WALLEN AIR DELIVERY DEVICE FOR VENIILATING APPARATUS 2 Sheets-Sheet l Filed Dec. 30, 1948 lllll IIIL up.. i

Sept. 18, 1951 G, R WALLEN 2,568,044

AIR DELIVERY DEVICE FOR VENTILATING APPARATUS Filed Dec. 30, 1948 2 Sheets-Sheet 2 o -l /g f5 me/Mofa GeofgeR. Wllen,

Patented Sept. 18, 1951 UNITED STATES PATfENrfoFFlCE George R. Wallen, New York, N. Y, assignorto Anemostat Corporation of America,`New Yorkt- N. Y., a corporation of Delaware Application December 30, 192118,?S'crial No.68,f1\87 7 claims. (o1. 9s-4o) In Ventilating certain long, narrow-enclosures,

such asra'ilway'passenger cars, motor buses and the dike, :it usually `-is desirable to have an overhead air supply duct or plenum chamber located in 'the 'roof structure of the Venclosure approximatelymidway between 'the sides of the Ilatter andextending longitudinally thereof. Moreover, inisuch case, it usually isdesirable to have'air deliveredioutwardly and downwardly from the duct orplenum chamber over 'persons-seated `adjacent to tithe sides fof thefenclosure fin order that the persons Amay derive lb'e'neiit lfrom lthe air. At the same time, in order to avoid discomfort to `the persons, itis Adesirable that :the air =be delivered lit fdilused rather than in blast form.

Accordingly, ther'primaryobject of the present invention is to aprovi'de an air `delivery -devi'ce which is `specially designed to deliver alrdown- Wardly andflaterally outward and in diffused form `from :an air :supply duct or v'plenum V.chamber under circumstances such `as mentio'nedin 'order to'obtain greatestben'eiits from the air.

.fAnother speciaVand importantobject of the invention fis to p'rovide an air 'delivery device Snot only is specially designed to deiver dir downwardly and laterally outward in diffused form from an air supply duct, or 'plenum chambei', but`which is Vso constructed as to have an 'aspirating `action `vv'llei'elo'y the ventilating air is, to a considerable extent, intermixed with and teniperedby the `enclosure 4air in the immediate .vicinityof thedevic@ so that personsover wh`om the "Ventil-ating `air is delivered "experience little o'r no `sensation .of draft'eve'n though there may be a fconsiderable `difference in `temperature `between the enclosure air 4and Vthe Ventilating air. .Anotherobje'ctof vthe'i'nvention is to provide qain air'delivery device which operates in the vinan- -ner s'tated 'and which includes novel 'damper means to regul-ate the v.amount of air delivered 'thrnu'gh the device and lto insure substantially -u'niforln 'delivery of air from the device `'at 'all .pbints along the llengththereof regardless of its length. f

With the foregoing 'andother objects in view, which will becomefmore fully apparent as the natureof vthe invention is better understood, the same" consists infan 'air delivery device embodying Athe novel -f'eatu'resof construction, combination and Varrangement of parts as are illustrated by YAway `of example 1in the accompanying drawings and Vas will cbe :hereinafter 'more fully described and claimed.

.'In the accompanying drawings, wherein like characters of reference denote corresponding parts in theydifferent views:

Fig. lis a -transversesection -through .an air delivery -devi'ce constructed-.in `accordance with one practical embodiment of Pthe invention.

Fig. l2 is A:a top -plan 'view .of ra portion vof .the deviceshownin Fig; l'. A

Fig. l3 :is 1a vertical, r longitudinal section .on the .line 3-3\offFig. 1;*and

Fig. 4 is E'a view-similar -torllig 1 illustrating `an alternative-formbfthe device.

Referring .to the drawings -in detail, `it will. be -observed --that` the ypresent fair. delivery'. device .vis composed, :primarilyof an-innensideI wall man `outerfsidewall Il, end walls I2, altop .wall f l3lhav.- ling -therein -at points-.spaced .apart al `:-ng` .its length a plurality `fofair inlet openings .l l, .and a valve plate l5 overlying said top Wall l3- and slidable longitudinally (relative. .thereto land likewise having thereinat--points spaced .apart along its lengthia plurality offair inlet openings i6..

'-Ifhe device-may .be-cf .any desiredV length 'and 'maybe-.straight or curvedas viewed in plan.L .Tn Veither case, atlleastthelower portion 'of the outer side wall- I-I is-.inclined downwardly and outwardly. Thelowerfportion of the. inner side wall Hl `also vmay `be .inclined .downwardly andv outwardly. Preferably, however, the .inner sidewall is disposed vertically, or substantially vertically so that the-lower or-air outlet .portion-of the -ele- .viceds @ofy .downwardly .a-ring Yformin cross sec.- tion .andrasan entirety, isV inclined downwardly Aandyoutwardly..relative to the .upper or air inlet iportionof the device. At their bottomsftheside wallsA Ill and l l pref;- -erablyare flanged outwardly,\as indicated at lll, .to under-lie the portions of-.aI ceiling -lto either sideoilan opening therein through whichfthedevice. extends. -Between the flanges l1 andthe `ceiling I8 may be linterposed sealing strips [19 f sponge rubber or any. other suitable material. f

The top portion. 'of the device .may simply be `disposedina relatively wide air` supplysduct er .plenumchamber 2U, as shown, or, if desired, a

.narrower airsupply `duct norplenum chamber may be connected directlyto the top wall .I3,i.wherfeby air issupplied from said duct `or. plenum chamber, -to .the devicethrough the `openings `I 4 'and f6 when said openings-are mo're or less Lal'inedwith each other. In either jcase, the `duct for plenum chamber `2D 'is co'extensive .in .length with the' device.V

,tween said plates 26. ,flowing downwardlythrough the passageways b While the valve plate I may be mounted in overlying relationship to the top wall I3 and for longitudinal sliding movement relative to the latter in any suitable manner, one simple, practical manner of so mounting said plate is to provide the samewith downwardly extending side anges 2| having slots 22 rtherein and extending longi` tudinally thereof, and to extend suitable fasteners 23 through said slots into the front and rear walls IIJ and II.

The device may be provided with only a single valve plate I5 substantially coextensive in length with the device, or with any desired plurality of separate valve plates I5 which collectively lare substantially coextensive in length with the device. In either case the openings I4 and I6 and the closed portions of the top wall I3 and the valve plate, or plates, between said openings are of lengths such that said openings may be more or less alined by longitudinal adjustments of the valve plate or plates. Thus, the effective areas of theopenings I4 and I6 may be varied to regullate the'amount of air delivered through thedevice.

l Ventilating air from any suitable source flows,

of. courselongitudinally through the air supply duct or plenum chamber 20. In this connection, in order to insure the delivery of substantially equal amounts of air through the device throughout its length, the valve plate or plates I5 is, or are, provided, at points spaced apart along its, or their, length, or lengths, with transverse, vertically disposed, upstanding tongues 24, each to intercept a portion of the air and to deiiect it through an adjacent more or less alined pair of the openings I4 and I6. To assist in insuring de Vlivery of substantially equal Vamounts of air through the device throughout its length, the top ,wall I3 4also may be provided, at points spaced apart along its length, with transverse, depending tongues 25.

As shown, the tongues 24 and 25 may appropriately be comprised by portions of the valve plate, .or plates, .I5 and the top wall I3, respectively, which are struck `from saidvalve plate, or plates, and said top wall to provide the openings I6 and I4 therein. In this connection and if desired, the valve member I5 may underlie the top wall I3 instead o'f being superimposed thereon, in which event the tongues 24 will depend from said valve ,member and the tongues 25 will extend upwardly from said top wall.

In the lower portion of the device are a plu lrality of air'deflector plates 2B which are inclined downwardly and outwardly, which extend preferably from end-to end of the device and which are -wall I3 may be such that air will flow downwardly ,through the passageways a, a between the walls I0 and I I and the innermost and the outermost of the plates 26, respectively, as well as downwardly through the passageways brbetween said plates 26. On the other hand, the Vwidths of said openings I4 and I6 and the spacing of theY top oi the innermost and theoutermost of the plates 26 ,below the top wall I3 may be such, as shown in Figs. 1 to 3 of the drawings, that air .will-flow downwardly only through the passageways b be- Inthe latter event, air

obviously will create low pressure zones beneath the top wall I3 adjacent to the side walls I0 and 4 II with the result that enclosure air will be caused to flow upwardly through the passageways a, a to become intermixed with the downwardly owing air and to be discharged with the latter. The supplied air thus will be tempered by the enclosure air within and in the immediate vicinity of the device.

While the plates 26 may be disposed parallel or in any other desired relationship to each other and to the wall II regardless of whether there is to be downward or upward flow of air through the passageways a, a, said plates 26 preferably will be disposed in downwardly diverging relationship to each other and to the walls I0 and II if there is to be downward flow of air through said passageways a, a so that the air may expand as it flows downwardly and be delivered from the device in diffused form. If, on the other hand, thereis to be an upward or aspirating flow of air through either or both of the passageways a, a, the outermost of the plates 26 may be disposed as desired relative to the walls II) and II, but said plates preferably will diverge downwardly relative to each other to permit expansion of the air as it ows downwardly through the passageways b, whereby the air will be delivered from the device in diffused form.

Obviously, because of the design of the device as shown and described, the entire volume of the supplied air is deflected laterally outward from the device so that the device is particularly adapted for use in delivering air from centrally located, overhead ducts in railway passenger oars, buses and the like over passengers seated adjacent to the sides of the cars, buses or the like.

Any suitable means may be provided for slid'-` ing the valve plate, or plates, I5 longitudinally to vary the effective areas of the openings I4 and I6 and hence to regulate the amount of air delivered through the device. In this connection and as illustrated by way of example in the drawings, the valve plate, or plates, I5 may be provided with a tab, or tabs, 21 depending through one or more of the openings I4 in the top wall I3, as shown in Fig. 3, to be engaged by a suitable implement inserted from the bottom of the device between the plates 26 to shift the valve plate, or plates, I5 any desired amount in either direction. Fig. 4 of the drawings illustrates that the top of the innermost plate 26', which corresponds to the innermost plate 26 of the Figs. 1 to 3 form of the invention, may be disposed considerably below the top wall I3' of the device, and that a deiiector plate 28 may be fastened at its top to the inner side wall I0 of the device and may extend at a downward and outward inclination into overlying, spaced relationship to the top of said innermost plate 26 to prevent the supplied air from entering the passageway a between the plate 26' and the inner side wall I0 of the device. whereby there is produced an aspirating flow of air through the passageway a' and consequent mixing of the enclosure air with the supplied air. This same arrangement obviously may be used -at the outer side of the device if desired.

In the drawings, the side walls II) and II and the plates 2G are shown as being provided at their ends with tabs 29 which extend through slots in the end walls I2 and are bent over against the outer faces of the latter whereby said side walls, end walls and plates are fastened together. However, said side and end walls and said plates iir'laiiyf-otlier suitable s'ired Ynumber ci the devicesernay beeinand to-endrelaticns'ni to each ct er 'fis` elife'ved;l that the 'construction and' operation "or the' presen-t' 'air delivery devices white clearly understood andtheii'iadvantages appreciated It y -isfdesiredfto point out, howeverftnatwnile only L'specific' structurale embodiments oisaid devices have been illustratedanddescribed, e saine Iare seerd-ilyA capable or speeineanydine-'rent struetural 'embodiments within- Tthef fspiritand scope pti the-'invention es defined "the `appended claims.

'lola-ini:

1. A device, for delivery of yair, from an air supply duct into an enclosure, 'said device being ro finienat its bottoni .for flow of airtheiethrou'gh and comprising a top wall, an inner sidewall, an outer side wallv inclined downward-ly and outwardly relative to said inner side wall, down- `vs ardly and` outwardly inclined plates 'in the jflowerpcrtion cfsaid' device spaced from-each 'o her Yand from the side Walls of, thedevice to 'd ,ideja'ilr flowing downwardly jthrough the` rde- #vide into' a plural-ity ofseparate V:streamsand to 'deflect' the `strearris lateral-ly outward Vfrom the device, said top wall having therein at points spaced apart along its length openings for inlet of air to the device, a valve plate disposed against said top wall and slidable longitudinally with respect thereto and having therein at points spaced apart along its length openings for alinement and disalinement with and from the openings in said top wall to regulate the amount of air ilowing through the device, and tongues extending upwardly and transversely relative to said top wall to cause air supplied to the device to be distributed substantially uniformly along the length of the device.

2. A device for delivery of air from an air supply duct into an enclosure, said device being open at its bottom and comprising a top wall, an inner side Wall, an outer side wall inclined downwardly and outwardly relative to said inner side wall, downwardly and outwardly inclined plates in the lower portion of said device spaced from each other and from the side walls of the device to divide air iiowing downwardly through the de'- vice into a plurality of separate streams and to deect the streams laterally outward Yfrom the device, said top wall having therein at points spaced apart along its length openings for inlet of air to the device, a valve member disposed against said top wall and slidable longitudinally with respect thereto and having therein at points spaced apart along its length openings for alinement and disalinement with'and from the openings in said top wall to regulate the amount of air flowing through the device, and tongues extending upwardly and downwardly and transversely relative to said top wall to cause air supplied to the device ,to be distributed substantially uniformly along the length of the device.

3. A device for delivery of air from an air supply duct into an enclosure, said device having a top opening for inlet of air thereto and being open atA its bottom for outlet of air thereeinem rising ennner-sidewaipanfeumr i y, wnvvardly#andffoiitwardly relative 'to-said* inner sidewall; downwardlyand outwardly inclined plates in the lower portion 'ofsaidfdevice spaced from eachother and from the side Walls of 4"the `device t0 ydivide `air flowing downwardly vthrougl'ithe device into apluralitfy ofjsepa'rate streams and y'to deflect the vstreams laterally" "outward` from the device, :and Van iotlner plate vin 'the lower portion ofsaid device 'fastened 'to' jone'of the side Walls of said del vice' 'and extending in downwardly diverging rejl'ation'shipfto the 'side Wall to which it fastened intoV overlying spa-cedrelationship to the top 'of the 'one ofsaid' 'rst mentioned plates which-is disposed nearest to said-"side wall,l`whereby air .supplied downwardly ltnipngi-ll the device. is Ade'- il'ected acrossthe top- 1or" the space between said 'side wallandv the vsaidjo'ne `ofsaid first mentioned p s' so asgto'y produce an' upward flow of en- Lci su eiain through said space and -intermix tureof thelatter air with the air supplied down'- wardly through the'device. 'l

4, A 'deviceiorfdelivery-of air from `-an air supply duct into an enclosure, said device being open at its bottom forow of air therethrough 'and comprising-a 'top wall, an inner side wall, an outer side wan inclined downwardly and outwardly relative to saidzinner side wall, downjw'ardiy and outwardly- `inciin'ed plates "in rthe lower' portion of said device spaced 'from each 'other and from the' sidewalls of the device to divide 'air 'flowing downwardlythrough the def vice'iiito 'a plurality'of separate streams 'and to f deiiect the streams laterally outward from the device, said top Wall having therein at points spaced apart along its length openings for inlet of air to the device, a valve plate superimposed upon said top wall and slidable longitudinally with respect thereto and having therein at points spaced apart along its length openings for alinement and disalinement with and from the openings in said top wall to regulate the amount of air flowing through the device, tongues extending upwardly from and transversely relative to said valve plate at points spaced therealong and other tongues extending downwardly from and transversely relative to said top wall at points spaced along the latter to cause air supplied to the device to be distributed substantially uniforrnly along the Ylength of the device.

5. A narrow elongated device of substantially uniform cross section throughout its length for delivery of air from an air supply duct into an enclosure, said device being open at its bottom for ow of air therefrom and comprising a top wall, an inner side wall, an outer side wall inclined downwardly and outwardly relative to said inner side wall, downwardly and outwardly inclined plates in the lower portion of said device spaced from each other and from the side walls of the device to divide air flowing downwardly through the device into a plurality of separate streams and to deflect the streams laterally outward from the device, said top wall having therein at points spaced apart along and substantially throughout its length openings for inlet of air to the device, a valve plate substantially coextensive in length with said top wall superimposed upon said top wall and slidable longitudinally with respect thereto and having therein at points spaced apart along its length openings for alinement and disalinement with and from the openings in said top wall to regulate the amount of vair iiowing through the and outwardly relative to said inner side wall,

downwardly and outwardly inclined plates between said side walls spaced from the latter and from each other to divide air flowing downwardly through they device into a plurality of separate streams and to deect the streams laterally `outward from the device, and an air baiiieplate in said device disposed at least in part between said top opening and the top v.of one of said plates next adjacent to one of said side wallsvto prevent air supplied to the device through said top opening from entering the space between the said one of said side walls and the plate next adjacent thereto, said air baiile plate being spaced from the top of the said one of said plates which is next adjacent to said one of said side walls whereby air flowing downwardly through the device produces a suctionefect in said space and an upward flow of enclosure air therethrough for intermixture with the air supplied through said top opening.

7. A narrow elongated device of substantially uniform cross section throughout its length for deliveryv of air from an air supply duct into an enclosure, said device being open at its bottom for flow of` air therefromand comprising'a top wall, an inner side wall, an outer side wall inclined downwardly and outwardly relative to said inner side wall, downwardly and outwardly inclined plates in the lower portion of said device spaced from each other and from the side walls of the device to divide air flowing downwardly through they device into a plurality of separate streams and to deiiect the streams laterally outward from the device, said top wall having therein at points spaced apart along and substantially throughout its length openings for inlet of air to the device, and a valve plate substantially coextensive in length with said top wall superimposed upon said top wall and slidable longitudinally with respect thereto and having therein at points spaced apart along its length openings for alinement and disalinement Iwith and from the openings in said top wall to regulate theiamount of air flowing through the device.

GEORGE R. WALLEN.

REFERENCES CITED The following references are of record in th ille of this patent:

UNITED STATES PATENTS 2,466,851 Honerkamp et al.v Apr. 12, 1949 

